Lock



July 27, i943. L. E. DEUTSCH 2,325,310

LOCK

Filed' March 2. 193s 4' T .if 34 j f7 6 1/ 64 ATTORNEYS.

same with similar locking PatentedrJuly 27,A 1943 UNITED STTES FATENT i2,325,310.' o fr',

l lDeutsch, Hammond, Ind.

lAp`p`1ieiiiieii Marcha, 1939', seriaiiNo. 259,336

This invention relates inl general to locks, and more particularlyVtoadjustable,y key operated tumbler locks; andconstitutes'animprovement in the type of'lock disclosediin myprior'United 'States Letters Patent No. 2,019,31199,Vv October 29,

1935; No. 2,`021,433, Nevemberig; y1935; .NQ 2,024,030, December10,1935; ndiNa. 2,060,978 November-l7,'1936. ,e I

A principal object of the invention-is-the provision of an adjustable,key operated-lock havl0 ing unitary locking actuators, instead of thetwopart, relatively adjustable tumblers and actua'' tors of the locks ofymy prior patents above enumerated. Y

Another important 'object of the invention is I 1'5 the provision ofsuch a lock in which the Combination set therein may-be readilychanged'by merely repositioning some ori all of the several lockingactuators employed,'or by replacing'- the ferent characteristics..v`

A further important object ofthe inventionI is the provision of such akey operated lock having a carrier for the locking actuators which maytion of a key having the proper combination set therein tofacilitatefthey setting of 'ai different combination in the lock byremovaland subsequent repositioning or replacement'of thelockingractuators in the carrier.

Another important object o f the iin/"entionV is the provision in such alock of anfauxiliary locking means to prevent unauthorized removal ofthe carrierA from the casing, which is rendered operable to permitremoval of thefc'arrier from l` thev casing only W`hen a Vparticular`Vkey isus'e'dv in the lock, said auxiliary locking means remaininginoperable when any other key is inserted into the lock, even thoughthe-combinationof the latter key is correctly set to enable it to/4ooperate the look. v v u A further and very'important object of the," invention is the provision of a'4 substantially -rpick- -proof lock, i. e.a lock ywhich it is substantially. impossible to open except by a keyhaving the actuators therein set to the saine'` combination' as that towhich the locking actuators ,ofjthe' lock` are set. f l 1 j Anotherobject of Athe inventionisthe provi-` operation, and cheap When taken'in connection 'vvit-hf t f embodying the features ofA m'y y inventionsubstantially on I ccompanying drawing, discloses a preferred mbodirnentFig; 4 is' a transve se', `vertical'-secti-ontaken locking actuators inplace; l f Eig. 5 is a transverse ysectional View i `ken sublookembodying' ,the features/of rny invention Whichffis villuStrated"therein comprises `an outer casingv member-indicated generallybyreference numeral I I, acarr'i'erfindicatedfgenerally by refn "ere'ncenumeral I2;'which"ijsfadaptedjto beV v'robe removed` from its supportingcasing by opera' 2%' tat'ably mounted' Within-"the `casing :"II; afron'tfpieiel's'end muere 'piugj 'rjpiate'rneiiiber i4 -"slidablymounted'forlongitudinal movement relative tothe 'carrierIZ'an'dthe-front plate'rI 3 vTheA casingr`v yI I is cylindrical *inls'hape'an'dis am' inder lockf-to 'facilitate yinsertion' tl'ireofinto adimensioned-exteriorly 7 similarly'to f theusual cyl- ,suitable aperturein a-deererfihe iiie-iiieteheim) stood from. the'ioiiowirigdescription," which/t5 '('Ei'gs.*2, 3' and 5) Vfoi-fthe accommodationcarrier |2. The 'bore' ,ls is 'enlarged f ibored -for arelativelyshort-distance Aat-its-forward end atl I6 to'l I'"rbs" 23,24,-"and 25.2' AQ grooves (shown herein .fbx-cachedorfotherwiselctlthrou the'nn4 Apsion of such a lock Which'is extremelysimpleinA i0A construction, eincient in "to manufacture.

in anyuesi'redmanneri The raising-fill'is provided ',iiit'e'rieriy 'withe longitudinally tore" |75 or i counteraccommodate vthe freni r"pleitefl a.

The bore I5 is also enlargedforfa shortdistance `intermediate its endsto provide'acircumferential channel I'I (Figs. 2, Bfand 4i)- fo'r'apurposeftofbe later described. Similarly, the bore fVISv isfen-4largedat spaced intervals tothe `'rear o'f the channel- I1 to providenarrow channelsljlls, 2'I`fiand 22- (Figs. 2A and 3) Which-definecircumferential tion of theicasing -I I 'eachV ofwhich i lock einempletely threes-h .the reark memh I:leere 4,3 .ofthe menherelelarefaldehly d .within the Severalsleeves` 2 fr L rower than the grooves26 and slightly Wider than the grooves 21, and together with the grooves25,

21, are evenly spaced about the inner periphery of the casing II. Theseveral grooves 26, 21 and 28' extend longitudinally through the casingI I from the inner end of the enlarged portion IB of the bore (Fig. 3).

The carrier I2 is made up of three separate parts, comprising a mainpart 3| which is in the form of a hollow cylinder, a. centrally disposedplug 32, and a rearpart 33 which is also in the form 'of a hollowcylinder. The outer diameter of the two parts 3| and 33 is very slightlyless Y than the inner diameter of the bore |5 in the casing I I. Theinner diameters of the two members 3| and 33 are substantially the sameas the outer diameter of the member 32.

v,carrier I2 in radial alinement with the grooves 31 and 38 in themember 3|. The forward end of each of the recesses 46 is reduced indiameter to provide asuitable shoulder against which. the

As's shown best in Figs. 4 and 5, the center member or plug 32 isprovided with a pair of diametrically opposed, longitudinally extendinganges of differ-- eht .width which are adapted to engage-.suitable'longitudinally grooves providedin. each of the end members 3| and 33.'Ihegcentral member 32 extends less than half .the Wayinto the. rear.endet the main member-.3|- and com- @332 :miv Sen .any suitable cured tothe imain member 3| manner. .such asbv. a' driven. nin.. 34 (Fig. y2.)extendinethreughaeuiteble eeeneratine apertures in. themernleers 3l. and32.-. 4The rearmember 33 is removably Segured to the; 1 )lug32 by meansof e .screw Slime-...Error .ape-mcse te.` be later more fullyexplained-u l f The outer periphery of the 1main member .3| et.theeerrier l2 ieprevided -witha peiref diemetrieallv. ermee@ .lilasltwleh are of slightly shorter .length-than the Width of. the .channelI1 provided inthe .easing IIAF'is` .2) andere adapted te .be .pesitiehed.ihalihemeht with Lthis chenne1 Whentheeerrier, i2 is.preperlvfpeeitiened vvthri the .testes eszehewh 'in the .dmv/ine.

,The less 3S. Merisier thanthegroever. .28. in the easing Il. (Ela. 4),,-l'rt :are ,eumeiehtly narrow to hermit -eliencignereer -ieheitudmeuyer the ,Qas- .ins through ehr 01. the. sleeves 2l, These lugs 3'6'fnetienjte prevent y1.eriaitudin.,el movement 0f the carrier-l2relativetothe casing. II when the lugfle iteleelsed -reetlehi ais-shownin. v,the aree:-

.iha fer aimreeefteheleter ,more fully deSeribed. r vThe mem member.- 3lefr th ...eeerrier l2 Y' vi Vrelatienehir areurldfits meouter peripherywith le yphireltvefV radially .ciiepeeed electives 13:1. 4). vvheherespaced.; te-coincide with. the geeves 6, '21 the easingv H -vvheh the.carrier is. .disposed .-thereirrfin ite -leeleed peeitien -efl thedrewihef.- .The hherpertieh. `of the membevil eieprevidedewith sapluraltyef creumterf entie'lly epeeed. grooves/138. whehare smaller thanvtheareeves.= `.i and etere Jelly alined therewith. 1 The crimes 3.8ere. lprefeimbly breached in. the. irielneher l. While the .Outereentleureten or the l member 3.1.; ineludihg. .the ereeves 3T and thelugs, may bechteined by using-.Steele which-1S extruded to such .shane-`l'l'he ,grooves '31. 38 yihthe math. member 3l lockingactuators 4|.-(li'igs. Sandi). kof the leellref .eetiteters 4l campuses a unitary.,mem-

, herehavins threeparts; amain ortumhler part-,4.2 eff.ervvardly.teilten.dirleles1 yer actuating vpart .4.3.

end e ,rearwardly extending les 4.4. .-'I'he etuetor ispeeedhthermainfmemher 3| vrer therapies! 2. tumbler-part 522.gif

be secured in any Idesired manner.

head'portion of a plug 41 is adapted to engage. One of '.the'se plugs 41is disposed in each of the recesses 46`andis provided with a reducedrear endp'ortion which slidably engages the interior Q fth'e associatedspring.l Afterthe several springs-45 and plugs `4 1 have been assembledin k,the .rearmernber 33 tl i e rear-ends of the apertures` 4Bare-.closed by rigidly securinga. plate .4Q (Eis. .3). tof-the rear..`end-0f. themember 33 in env' euitablemahner- Therearleesu of the severallocking actuators 4| engage the forward surfaces of the heads of theseveral plugs 41..

It be noted inpassing-that the central `1r1ernbe1y32 ofthecarrier |2yextends rearwardly bevond the plete; 4t, and.. itis te this portieriofthe member 32 that the usualthrowbar may The main or tumbler portion42 of each `of the vlocking actuators 4I is provided adjacent its`iiinction with `.the legs 43 and v44 with. an out- -wardly `extending.protuberance 5| (Fig. 3) 4which is narrower than the remainingpart 0f the tumbler. .member 42 ('FigQlL fl'hev width .of this.protuberance 5| is very 'slightly less than the width-of the associatedgrooves 2 1. in the casing :I I., andfitiunctionsas an auxiliary lockinglug a apner to be 4more fully described hereinafter. Q

. Each .of .the locking actuars 4| is provided at the forward end of itstumbler portion `42 with an -pp ,virarlly extending main locking lug527. The

v1i 1gs`52 are of the same width or thickness as the main lportion ofthe tumbler part 42 Fig., k4)

and arev of slightly less length 'than the lwidth ,of thechannel I1 inthecasirig (Fig. 3). As

willr be noted in Fig. f3, the-:different locking ac tuators 4| #havetheir .tumbler portionsl 42 of Y.d ififerent lengths.A For example, theupper mem- ..b.er 4.| in Fig. 3 is` shown as ,beingof maximum v length,while the'lower member 4| isof mini- '.mllln, length) Others of themembers V4| may have their tumbler .portions 4 2 of any selecteddiierent lengths between these twolimits. The purpose ,of `employinglockingactuators having tumbler portions of different llengths wilibemore fully describedhereinafter.v

As .has 'beendescribedabove the front plate '|'3 is rotatablymountedupon the carrier I2. :Thisisy accomplished yby providing` anenlarged bore-or recess, in the front A.plate 3 which extends forwardly.therethrough to within a `shorthdisytance of the front end thereof andis so shaped .as te slidably and Yrotatably engage the forward end Aofthe -main member 3| Eof the carrier I2.

.fljhe'forward end `ofmythlis bore-.in the front plate `|3 is reduced toprovide a limitedV shoulder orv stopportion (Figs. 2 and 3).., vTheouter. vperipheryfofzfthe main partl vof the lcarrier I2 and '15ftheinner--Lperiphervef ,thefreht plete i3. `are -rthe center member32-of the provided with annular vrecesses which coincide .with eachother. when the -two members are in theirassembled:position of kFigs.'2' and 3; A

splitring or spring washer 54. is disposed'with-y in these tworecessesfor the purpose'of securing the members I3l and 3l together topermit relative rotation'r thereof, while preventing,relative`longitudinal. movement therebetween. -It.wil1 be appreciated that the.circumferential recess provided for this purpose in .',the 4front plateI3 is of sufficient depth to accommodatethe ring 54 when the latter isexpanded, in order to facilitate .assembly of these'parts. u With theabove. construction; the linnersurfaces ofthe actuator lugs f43' of thelockingac.-

tuators 4I would be-.exposed within the bore-.of -the main part 3I.ofthe. carrier..- I2. f

In `order -to protect. these actuator-lugs'43and-to prevent Vtheaccumulationof dirt-and otherforeign matter inthe bore of the member 3I,.the guard plug I4 is slidably mounted therein. The plug I4. has`substantially the same cross:;sectional shape as has the center member32 of the carrier I2(Figs.

l to 3). .Outward movement. of the guard plug I4 is limited by theshoulder53v of the front plate I3. cut away or reduced to provide acylindrical. stop or postv 55, the rear end .of which isi shaped toslidably engage vwithin a suitable axial bore or-recess 56 providedWithin the frontwenclof spring Slis mounted within this recess 56,ijnthe -center member 32 for the purposeof engaging the lrear endl of the.post 55 to gresiliently .maintain the guard plug I4 in its forwardposition, as shown in the drawing. The front end of slightlyy upset toprevent outward movementof the-iiinf-SI relative'to the-.plata bevondits position-.ofFa 3- .The .inner end-ofthe hollow pin 6i vis .Cut-awaymany suitable mannery to provide an inwardly` extending legorprotuberancev 66 which is adapt-1 ed tol slidably.- engage within asmallcompanion recess.- Il :(Fial extending-.through .the from plate.I3-,from `the inner-end of the recess 6 2 -to the n.bore of-the, plate.v position --of this protuberance 66 .on the hollow pin 16,1. .may :bevaried as desired, ,providing that the vrecess 6l be disposedinradial,alinement'there- .Pat'enfNo'.-21196414br.. .key will beprovided, with-bits or-actuating-memwith.; The v'purposefand y functionof this.v aux- .-iliary locking in chanism will .beffurtherz desCribedVhereinafter. --z .f The vabove -described lock is vinten1:led,to be operated by a suitably formed,ly,fsome what'simi- August17,.

bers arranged ,tolongitudinallycoincide with the ,actuatorlugs 4 3 ofthe1 ockingactuators4I..v

. outer dimensions of-, the key .will be r`such as yto .25 The'rearportion of theguard plug-I4 is carrier I2. .A-coil the guard plug I4 mayalso. be -provided with i.

a forwardly extending, axially disposedstudb for the purpose of engagingwithin asuitable K .recess in the forward end of a key to guide the.movements of the latter into the lock.

Withthemeehanism as above deseribeditmn f be readily apparent that thecarrier I2, together with the front plate I3 and guard plug I4,.may

be moved longitudinally into and out ofthe-'casing II, as a unit, ifthe.parts are properly positioned circumferentially,.in a manner to `belater moreffully described. yMeans are vprovided.1fo1 locking the frontplate I3 in its .assembled position in the.v casing II, as shown in thedrawing,

to prevent any movement thereof relative to the casing. Such means, ofcourse,`will notgpreve'nt rotation jor" .the carrier I2 relative to thefront plate I3 and the casing-II. i This auxiliary locking means isprovided for,

' plate I3 to within a short distance Iof-.thebore provided "in saidplate. The pinIl is vprovided.

at its' outer end with a reduced portion i3-which is'v adapted to engagewithin va suitable laxially disposed recess 64 in theouter flange ofthecasing. II. A coil spring 65 is mounted within .the hollow portion ofthe pin 6I, and engages the bottom portion 'ofthe recessl62 in .theplaterIS yto resiliently urge the pin 6I. outwardly relative. to theplate I3 to maintain Athe reducedrportion 63 of the pin in therecess 64.Afterthe pin. 6I

permit its. insertion through the bora-.of ithedfro'nt plate .I 3. andinto. the .bere k0f the. m'al mellbr 3 I o f the carrier I 2 and a-suitable .aperture may be providedin thefrontv end jOfHthe key forengaging. thefpin 5 8.to guidethe movementof the key into-the, lock.

- In' suchlongitudinalmovernent-oithekey nto :the lock, the guard plugI4-r will beu moved' rear- -wardly y of f the; flock against the actionv of A the spring. 5151i the key, actuatorsare setto the propercombination, i. -e.,"'to that-combination. to which theflockingactuators. 4 I ofthe lock are set, complete insertion of the key intothelock will move the `actuator lugs 43.pf the -lockingactu- --ators'-4;I. .-,rearwardly to position the locking lugs 40 52 vofthe.'tumblerportions 142 of the locking actuators in coincidencek with the :channelI-TI 4in the position; fthe .--key may 4then be .rotated Vto .rotate-thecarrier,-| 2 relative -togthe casing; I I and/the front plate I3. Itwill be noted that .suchv proper rearward? movement of the lockingzactua,tor s4I l .will result. in the lugs'5I- provided :thereonjbe'ing...tumbler portions binations vresults.-

positioned.. in: coincidencel with .one of; the several channels orrecessesy I8, I9,` 2I1or 2:2 provided in thecasing -I I.

If vanyone-of the locking `actuators Il-lis .properly moved to suchpassive or inactiveposiA tion; the vlocking-lug 52` on the tumblerportion 42 thereof `will. vbe iin engagement withsome portion of its'associatedgroove 26 in the casing 'I I to .prevent rotation of thecarrier, I 2 relative-tothe casing. .By employing locking actuatorshaving 42 y.of different lengths.. it, will be seenithat a very largenumber of possible-com- .'Itwill also be apparentthat the key actuatorsmust necessarily be .setfto the r same combination to-whichthe'lockingactuators v-II ofithe lock'areset, in order that the-:carrierI2 may be rotated relative to the casing I I; .Upon lremovalr of thekey' from the lock, .the springs-i5 will .return the locking actuators4I toytheir lock- I -ing positions, ras shown inthe drawing,` springAy5I Lwill. return and spring have been assembled inthe recess 62, themarginal portion-:of theplate I 3g`surrounding the outer end of the.`recess62 may be andthe they guard 'plug I Il -to `its normalposition.

` In order to change the combination in thelocl, itisnecessary .toremove the carrier I 2 from, the

. 'casing II.. After this Ahas been accomplished, the

.- -screw 35,-y orV lwhateverl other ,retaining -meaneuis .employe-d.may be removed. orreleasdtofpermit The .circumferential f :If all ofthe..1.0Cking lactuators are -.thus properly moved to-.this-passiveorreleased lreplaced in A *inal positions inthe-carrier, ordierentlooking 'is-of material impor-tarice.r

rvgrooves 28 may .bedimensioned :diiferentlyitouacf4 Vwitlrclrxmzallof;-the'rear member $3 of the carrier, includingl the-springs 545 whichare hhousediitherein, from the center member 32. A-ll-`o`ff'-the lockingactuators H arethen-ree'to'be' removedin a rearward direction fromcarrier; quently, these locking-*actuators 41 .-.maythen l"he diiiierentpositions ffrom I A4orig.;

Vactuators 'may 'bel inserterdi therein." The @actuators Vprovided invthe keyitor operating 4the lock may then bereset to theeewcombinationinthe lock. In thefabove-,describedremoval fof the rear member333mm'center 'member 32 othe carrier 'I2 -to enable vrepi,ns'iti'oni'ng"oflocking actuators 4I 1 to `set` a new-combination in the lock, Ait willbe appreciated that-'the-fact'thatfthe springs' `45 cannot "fall 4voutvorfbecomeflrlisplaced n 1n orderto permit-the remet/alorythe.carrier'112 from 'the v'casing '-Ifl, fthe" jcarrierfmustfberotated relative tothe lcasingby -a'fkey having 'the proper combination'sety therein; rfSuch rotation Irnust be sufcient to position`- the lugs3E on the main =part Vv3 I of the Vcarrier 'inflongitudinal' comcidencewith `a selected-'pair of diametrica'llyfopposed grooves mit sliding oftnemgs alsnieretnrough, whne the )grooves 26 are suiiiciently wilde to'accommodate the lugs 36. In other Words, tlfielugs 'func-tionf tonormally prevent `withdrawal of thefc'arrier I2 from -th`ef1casing-'II'. The' grooves "218 f-'must 'be provided,` however, to permitwithdrawal :of 'the particular 'lockingactuators I-'I that are moved tocoincidence therewith upon fthe 'proper 'rota-f' tion offthel carrier'to-electiwithdrawal thereof tudinallyrelativev to the easing;Itlwillbeunderstood that Ithe lugs .'36 may-bediiferently positionedthan herein 'illustratedfarid that Ithe commodate both the lugs 36 and.theilockingiactuators 4I when the .lugs a're .so positioned, ifdesired.` v'

:In order toi-complete. tneiremoval .rof i the carrier from 'the'casing,fhowever, itzis :necessary that the key which isbeingliemployedan'dwhich has the nproper -combination set therein, Ebeprovided with a recess which lwilllradialllycnincide with the recess 61in the front lplate'l3when'therkeyhas f been Irotated the fpr'oper.f'distance vrelative :to the,

casing Iandthefront platek to otherwise fipermit withdrawal i o'fthecarrieriromthe :casing: i With l such atkey,andhavingitproperlyIpositionedwith Vthe :above ldescribedrecess .inIvfradial alinement .with the recess Blithe `fhollowfzpinv 6I may be.moved 'inwardly Irelativeto thefront @plate I3 -to .remove thereducedportion 3 thereof 'from' `the recess 64 fin 'the casing.'IiIii-:Buchinward move- 'ment of the @hollow'pin-BIwillfonlylzbepermitted when a key having the necessary recess fis `posi-fm tioned Iin the lock withrsucharecess in -alinement in 3, the '.inner `-end-"offthe 'lpin 65 normally ...im lvantage of being substantially pick-proof.

' @gestern `carrier by fthe A'key f to fthe proper position itoIperimIiIt -withdrawal'th'eeof from the casing, however, .willf'brin'g alongitudinalgroove or recess 88pm- Yvided 'in vthe member 13.I fatvthejtop thereof, shown in Fi/g.z=2, Vinto alinement with the-protu'beranceiv IfI-the ikeyIdoes not have the necessary recess thereinfor accommodation of this protuberance i6, yeverrthough. it 'have.the'proper -combination .set therein, l it will be impossible to movethepinfl inwardly out of itsnorrnallockvingV position shown in 4liiigg,sincegthe protuberance 66 will 'thenabut against the key.

It will thus be seen that the carrier I2 .can be removed `fromthelockzonlythya keyrhaving not 315 uonly the proper :combinationsetItherein,.but also Yhaving a'recesszwhich isiproperly positionedso asft'ofbe V.a'lined .withthe protuberance. 66 when the .-key'is rotatedinthe :lockto carrier removable position. Consequently,'it possibleto-provide @o lany number. .of keys with the `propercombination topermitunlockingxofthe locktherewith, while I :preventing .removalcoffthecarrier from the casing Iby 'the use :of fsuch'keys. lIt willalsobeapparent Athat ltheiprotuberanceiand the aperture 61 may 5 bedisposedwin .any-of a `pluralityof positions I Iiabout the circumferenceofthe hollow :pin 6|, so

fthat similar lauxiliary locking mechanism may fbe'employediinvdifferent'series of locks. As shown :.-in the drawingit is necessary torotate vthe iny,Mistan't carrier throughf772 infaclockwise direction,viewinglFigs. l, 4 and 5,'toibring it into posi- 'ition to :be removedfro'm the casing. I However, any other desired -rdegree of rotation maybe fem- .Iployed tto vaccomplishthis function. vIt -will be 5,35understood, of course, thatthe pin 6I may be of solid. I construction,with the spring t 65 vsurrounding it,Y .rather'than Ifbeing hollow jasillustrated herein. i" I Theznstantlock has the extremely novel:ad Inorder to preventlany unauthorized operation of lthis `.lock1thegrooves121, channels I8, IS; 2| :and V22, circumferential Yribs 23,524 Vand 25,.and the auxiliary locking'lugs :51| Aon'the'locking actuators 541 Ihavefbeenprovidedi -Whenit is attempted to pick a lock,ithat is 'to :operatethe' same without -usingithe proper .-key rtherefor, it 'is v'customaryto :selectivelyI'contact-the tumblers, or inthe instant case thelockinga'ctuators, :with a suitable in- 50 .-strument and, bykmaintaining a substantialrotational Lpressureagainst the tumblers, tomove themfindividually and 'longitudinally' until such pressure -isperceptibly released therefrom. In this manner, it is possible'todetermine the exact v.setting of Ie'achindividual tumbler in practicallyI 'I-any lock. 1n tl'xe'in'stantl lock, however, jit Aissubstamtiallyimpos'sible tolsooperate it; l i j lInzorder to obtainthenecessaryzpressure"above referred-tn, the"carriermust-bemoved as far aspossible inza zclockwise :dir ection, for, example, :to

w holdthe. lockingractuatorsIl-I against the -sides.fofntheir'iassociatedgrooves inthe/casing II. If onlyethemain flockinglugs :52 of 'the :lookingacituators 41|- :were gexnployed,l Isuchpressure would ,65 .beithetween this 'aportionf of the tumbler parts -42Iemdithe'sidetsurrfacescof @the recesses-26. Insuch However, itwlllrabe'cnoted thatxthe auxiliary prtuber'ancesil on thelocking-:actuators l4I are :narrower ithan fthe :main .portion of `:theIlocking actuatorspand fit' their-iassociated grooves. .21 -muoh moreclosely ithanwthefmain partici :the 'flocking Iactuatrs'fft inthe':grooves .325. #Consesmfqugxm ylfiin attemm ing itoaohtainzthegnecessary pressure against the locking actuators, onlyv theauxiliary lugs will be in contact with the casing Il. While to anexceptional expert such pressure might be suicient for thedesiredpurpose, it will be noted from Fig. 3 that any subsequentrearward movement of any of the locking actuators 4|, in an effort todetermine its setting, will result in an almost immediate relieving ofsuch pressure, due to the auxiliary lug 5| being thus moved intocoincidence with the channel |8. This is due to the fact that thechannel I8, as Well as the channels I9, 2| and 22, is of sufficientwidth to accommodate the auxiliary lug 5|. e l

In this way, it will be substantially impossible for anyone tounauthorizedly ascertain the setting of the locking actuators 4|. If theperson attempting to unauthorizedly open the lock' decides that thisrst` position to which he has moved the particular locking actuator 4|is its passive position, and if it happens that the parsion. Withoutgoing into further detail, it is thought that the operation of theseseveral parts in preventing the picking of the linstant lock will f befully understood by one skilled in the art. It should be pointed out,however, that if the person attempting to unauthorizedly open the lockdoes subsequently discover his error and continues` to move the lockingactuator 4| rearwardly, the same result will obtain each time that theauxiliary lug 5| is positioned in coincidence circumferential flanges23, 24, and 25, together It is thought that the invention and many of'its attendant advantages will be understood from the foregoingdescription, and it will be apparent that various changes may be made inthe form, construction and arrangement of the parts without departingfrom the spirit and scope of the invention or sacrificing all of itsmaterial advantages, the form hereinbefore described being merely apreferred embodiment thereof.

l"A claim:

l. A lock of the class described, comprising a casing, a carrierrotatably and removably positisular 'actuator is one similar to theupper one in". Fig. 3, such will obviously be an erroneous deciwith theauxiliary lugs s: on the making actuators 4|, function to block thelongitudinal movement of the locking actuators which is necessary inorder to ascertain the passive position thereof. An auxiliary lug 5| isreleased from its lateral pressure, in any attempt to unauthorizedlyoperate the lock, only when it moves into one of the channels I8, I9, 2ior 22. The lateral pressure will then be had on the main lug 52 of thelocking -actuator 4|, but sufficient information cannot thus be gained,because the auxiliary lug 5| will then be disposed Within one of thechannels to block any further rearward longitudinal movement of thelocking actuator 4|. As a result, the pressure which is obtained cannotbe accompanied by the necessary longitudinal movement to impart the feelto the person attempting -to unauthorizedly operate the lock.

It will be noted from Fig. 3 that even `in their normally passiveposition, as illustrated by the lower locking actuator 4|, the lockingactuators must be moved a short distance rearwardly in order to bringthem into their true passive position. Consequently, whenever it isattempted to unauthorizedly rotate the carrier relative to the casing,the auxiliary locking lug 5| of each of the locking actuators will bethe only portion thereof initially providing the necessary lateralpressure, and when such pressure is obtained against the main lug 52,the auxiliary lug 5| will block longitudinal movement of the lockingactuator.

tioned within said casing, and a plurality of locking actuatorssupported by said carrier for longitudinal movement relative thereto andadapted to be removed from said carrier and repositioned relative toeach other only upon removal of said carrier from'said casing, saidlocking .actuators comprising integral members having separate actuatingand tumbler portions, and diiferent ones ofsaid tumbler portions beingof diiierent lengths to facilitate the setting of different combinationsin said lock.

2. A lock of the class described, comprising a casing, a carrierrotatably andremo-vably positionedwithinsaid casing, and a plurality oflocking actuatorssupported by said carrier for longitudinal `movementrelative thereto and adapted to be removed from said carrier and 3. Inalock of the class described, a casing, a

carrier mounted for rotation within said casing, tumblers mounted onsaid carrier for movement klongitudinally thereof to permit rotation oisaid carrier relative to said casing, locking lugs on said tumblersnormally disposed in longitudinal grooves in said casing for preventingrotation of said carrier relative to said casing, and auxiliary lugs onsaid tumblers normally disposedy in narrow :grooves in said casingforming radial extensions of said longitudinaly grooves to alone resistinitial unauthorized rotation of said carrier relative' to said casing.

4. A lock of the class described, comprising a y housing, a carrierrotatably and removably positioned in said housing, a pluralityoflocking actuators supported by said carrier for limited movementrelative thereto and adapted to be removed from said carrier andrepositioned relative to each other upon removal of the kcarrier fromsaid housing, individual springs for said locking actuators, and meansremovably mounted on said carrier for maintaining said lockingvactuators thereon and for housing said springs and retaining the sameagainst displacement therefromv upon removal of said means Afrom saidcarrier.

LEO E. DEUTSCH.

points longitudinally

